Abstract: A system and a method for measuring the thickness of a layer of coating deposited on a substrate indirectly measures the thickness of the layer of coating on the substrate by measuring the thickness of layers of coating on a coating roller before and after the coating is transferred from the coating roller to the substrate. To measure the thickness of the layers of coating on the coating roller two sensors are used directed to respective layer on the coating roller. The sensors have IR radiators and IR detectors.

Abstract: A non-foil packaging laminate for liquid food packaging comprises a core layer of paper or paperboard, outermost liquid tight, heat sealable layers of polyolefin and, applied onto the inner side of the layer of paper or paperboard, an oxygen gas barrier layer formed by liquid film coating of a liquid gas barrier composition and subsequent drying, the liquid composition containing a polymer binder dispersed or dissolved in a liquid medium. The laminate further comprises a layer of a polyolefin-based matrix polymer with inorganic filler particles distributed therein and inorganic particles dispersed also in the gas barrier layer from the liquid gas barrier composition. Also disclosed is a method for manufacturing the packaging laminate and a packaging container made from the packaging laminate.

Abstract: A non-foil packaging laminate for liquid food packaging comprises a first layer of paper situated towards the inner side of the packaging laminate and a second layer of paper situated towards the outer side of the packaging laminate, with the first and second paper layers laminated to each other by a first intermediate bonding layer in a sandwich structure. The packaging laminate further comprises a gas barrier coating layer, coated onto the inner side of the first paper layer by liquid film coating of a liquid gas barrier composition onto the first paper layer and subsequent drying, the liquid composition containing a polymer binder dispersed or dissolved in an aqueous or solvent medium, and a further barrier layer towards water vapour laminated and bonded to the barrier-coated inside of the first paper layer. Also disclosed is a method for manufacturing the laminate, and a packaging container made from the laminate.

Abstract: A system and a method for measuring the thickness of a layer of coating deposited on a substrate indirectly measures the thickness of the layer of coating on the substrate by measuring the thickness of layers of coating on a coating roller before and after the coating is transferred from the coating roller to the substrate. To measure the thickness of the layers of coating on the coating roller two sensors are used directed to respective layer on the coating roller. The sensors have IR radiators and IR detectors.

Abstract: A non-foil packaging laminate for liquid food packaging comprises a core layer of paper or paperboard, outermost liquid tight, heat sealable layers of polyolefin and, applied onto the inner side of the layer of paper or paperboard, an oxygen gas barrier layer formed by liquid film coating of a liquid gas barrier composition and subsequent drying, the liquid composition containing a polymer binder dispersed or dissolved in a liquid medium. The laminate further comprises a layer of a polyolefin-based matrix polymer with inorganic filler particles distributed therein and inorganic particles dispersed also in the gas barrier layer from the liquid gas barrier composition. Also disclosed is a method for manufacturing the packaging laminate and a packaging container made from the packaging laminate.

Abstract: Arrangement for manufacturing a web-shaped packaging laminate, comprising an extruder arranged so as to extrude a film of polymer material down into a nip between a cooling roll and a counter-roll, and also means of introducing at least one other layer of the packaging laminate into the said nip for joining the film together with the layer. According to the invention, the arrangement comprises an arrangement for covering the cooling roll with a surface layer of a water-based composition comprising a dry matter content. The invention also relates to the method for manufacturing the web-shaped packaging laminate, in which the composition is transferred as a thin layer to the film of polymer material in the nip, while the film of polymer material is still hot.

Abstract: A laminated packaging material (10) comprising a core layer (11) and a barrier layer (14) formed from a liqueform composition comprising a dispersion or solution of a polymer, starch or starch derivative on one side of the core layer, the barrier layer also including particles of amorphous SiO2. According to the invention, said particles of amorphous SiO2 in colloidal particle size in said barrier layer are present in a content of above 40 weight % but below 80 weight %. The invention also relates to a packaging container which has been produced from the packaging material, as well as a method of producing the packaging material.

Abstract: A low scalping laminate material for food packaging is formed from a core layer of paper or paperboard having a first side and as second side. A polymeric coating is applied to the first side of the core layer. A food contacting barrier layer is disposed on the second side of the core layer. The food contacting barrier layer is formed from a plurality of series of layers of polymeric materials. Each series of layers includes a polyolefin layer, a tie layer, a polyamide resin layer, a tie layer and a polyolefin layer. The plurality is a whole number greater than one and the layers are applied to provide a weight ratio of materials in each series of 15:46 for each of the polyolefin layers, 5:46 for each of the tie layers and 6:46 for the polyamide resin layer. A low scalping carton is also disclosed.

Abstract: Arrangement for manufacturing a web-shaped packaging laminate, comprising an extruder arranged so as to extrude a film of polymer material down into a nip between a cooling roll and a counter-roll, and also means of introducing at least one other layer of the packaging laminate into the said nip for joining the film together with the layer. According to the invention, the arrangement comprises an arrangement for covering the cooling roll with a surface layer of a water-based composition comprising a dry matter content. The invention also relates to the method for manufacturing the web-shaped packaging laminate, in which the composition is transferred as a thin layer to the film of polymer material in the nip, while the film of polymer material is still hot.

Abstract: The invention relates to a method of producing a laminated packaging material (10) including a core layer (16) of paper or paperboard and a barrier layer (14) applied on one side of the core layer. The invention also relates to a laminated packaging material (10) produced according to the method, as well as a packaging container (50) which is produced from the laminated packaging material (10).

Abstract: A laminated packaging material (10) comprising a core layer (11) and a barrier layer (14) formed from a liqueform composition comprising a dispersion or solution of a polymer, starch or starch derivative on one side of the core layer, the barrier layer also including particles of amorphous SiO2. According to the invention, said particles of amorphous SiO2 in colloidal particle size in said barrier layer are present in a content of above 40 weight % but below 80 weight %. The invention also relates to a packaging container which has been produced from the packaging material, as well as a method of producing the packaging material.

Abstract: A multi-layer packaging laminate is produced by simultaneously applying at least two wet coating layers to a substrate web (10) in a slide coater or curtain coater having a slide block (14) over which laminar flow streams of coating liquid flow to reach the substrate web. At least one layer is less than 20 ?m thick (wet) and at least one layer has oxygen barrier or scavenger properties.

Abstract: The invention relates to a method of producing a laminated packaging material (10) including a core layer (16) of paper or paperboard and a barrier layer (14) applied on one side of the core layer. The invention also relates to a laminated packaging material (10) produced according to the method, as well as a packaging container (50) which is produced from the laminated packaging material (10).

Abstract: An extruded/blow moulded bottle, together with a process for producing the bottle. The bottle has a wall structure (10) comprising a layer (11) of foamed plastic material which is surrounded by outer, solid layers (12 and 13) of plastic of the same type as the plastic in the foamed layer (11). The material in the foamed layer (11) includes a rigid polymer component and a ductile polymer component in a mixing ratio of from 1:3 to 3:1, and in addition the foamed layer (11) constitutes at least 50% of the total weight of the bottle. The bottle is produced by a combined extrusion/blow moulding process in which granulate starting material including the two polymer components and a chemical CO2-generating blowing agent is melted and, under excess pressure, is forced through an annular nozzle during simultaneous expansion of the formed CO2 blisters. The formed, foamed hose is accommodated in a mould cavity and inflated with the aid of air at high pressure to the desired bottle configuration.

Abstract: The present invention provides a method for producing a packaging laminate having excellent gas barrier properties. The method involves applying a solution or dispersion of starch or starch derivative to a surface of a substrate of paper or paperboard, and applying a layer of plastic to said starch or starch derivative so as to modify the properties of same such that the starch or starch derivative provides a gas barrier property.

Abstract: A multi-layer packaging laminate is produced by simultaneously applying at least two wet coating layers to a substrate web (10) in a slide coater or curtain coater having a slide block (14) over which laminar flow streams of coating liquid flow to reach the substrate web. At least one layer is less than 20 &mgr;m thick (wet) and at least one layer has oxygen barrier or scavenger properties.

Abstract: An extruded/blow moulded bottle. together with a process for producing the bottle. The bottle has a wall structure (10) comprising a layer (11) of foamed plastic material which is surrounded by outer, solid layers (12 and 3) of plastic of the same type as the plastic in the foamed layer (11). The material in the foamed layer (11) includes a rigid polymer component and a ductile polymer component in a mixing ratio of from 1:3 to 3:1, and in addition the foamed layer (11) constitutes at least 50% of the total weight of the bottle. The bottle is produced by a combined extrusion/blow moulding process in which granulate starting material including the two polymer components and a chemical CO 2—generating blowing agent is melted and, under excess pressure, is forced through an annular nozzle during simultaneous expansion of the formed CO 2 blisters. The formed, foamed hose is accommodated in a mould cavity and inflated with the aid of air at high pressure to the desired bottle configuration.

Abstract: The invention relates to a packaging laminate having one or more gas barrier layers of starch or starch derivative providing an oxygen gas barrier property of 50, preferably 30 cm3/m2 at 24 h, 1 atm (23° C., 50% RH) or better, said gas barrier layer having a dry coating weight no more than 7 g/m2. The invention also relates to a method for producing such a packaging laminate and to packaging containers manufactured from the packaging laminate.

Abstract: The disclosure relates to printing ink-decorated packaging laminate for aseptic packages of the type which is produced in that a web of paper which has an outer coating of plastic is, for the purpose of sterilization, led through a bath of hydrogen peroxide prior to the reforming of the web into aseptic packages. The packaging laminate has a décor of water-based printing ink which is applied in the desired pattern on the outside of the outer plastic coating. For the purpose of protecting the water-based printing ink décor against attack from hydrogen peroxide in connection with the sterilization process, the packaging laminate is provided with an outer layer of water-based polyethylene or water-based acid-modified polyethylene which, by means of so-called dispersion coating, is applied on the printing ink-decorated outer plastic coating after, or in connection with the application of said printing ink décor.

Abstract: A sheet- or web-shaped packaging blank (10) of a laminate including a core layer (11) and a layer of a moisture-sensitive gas barrier material (13), in which the gas barrier layer is disposed between two layers (14, 15) of a moisture-resistant material and is omitted in narrow strip shaped regions (16a, 16b) along both longitudinal edges of the packaging blank. The moisture-sensitive gas barrier layer (13) will by such means be encapsulated between moisture-resistant material and well protected against the action of ambient moisture also along the longitudinal, exposed incision edges of the packaging blank. The moisture-sensitive gas barrier material preferably substantially comprises PVOH and is applied preferably by means of coating in the form of an aqueous dispersion and subsequent drying.